class_docstr: Abstract agent class.
docstr: Save internal states.
  
  Returns:
      None
docstr_tok: ["Save","internal","states",".","Returns",":","None"]
code: def save(self, dirname: str) -> None:
      """Save internal states.
  
      Returns:
          None
      """
      pass
  
imports: import contextlib
  import os
  from abc import ABCMeta, abstractmethod, abstractproperty
  from typing import Any, List, Optional, Sequence, Tuple
  import torch
label_desc: Use image node_id 3 for calling the Agent obj's underlying member method code with example usage: obj.save(dirname) without return types